ued for PVC door and window profiles&comma; porous threading tubes&lpar;four holes&comma; six holes&comma; seven holes etc&period;&rpar; extrusion&period; the production line according to different production section and mold&comma; use different specification of the parallel&lpar;conical&rpar; double-screw extruder&comma; and configure the corresponding vacuum table&comma; hauling devuce&comma; cutter&comma; stacker&comma;and other auxiliary equipments&period;Hosy extrusion capacity can be an hour betwwen 150-450kg optional&period;